Hardware and Software Requirements - Trading Technologies

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NIC Setting Number of TX buffers = Maximum Wake On = Disable Wake up Mode Cap = Disable Task Offload Cap = Disable Rx Coalescing Ticks= Disable Tx Coalescing Ticks = Disable Description This parameter determines the number of transmit buffers that are allocated by the driver when loaded, and thus significantly impacts the resources the driver consumes in the system (allocated memory). More transmit buffers allow more send operations to be in progress at one time, and thus potentially increases system performance – this also consumes more system resources. Setting this parameter too high can prevent the driver from loading due to insufficient system resources and runs the risk of the NIC dropping packets. The range of possible values for this parameter is 80-2048. TT recommends this is set to the maximum (2048). Wake on settings allow the user to set the adapter to wake up from a low power mode when it receives a network wake up frame. There are two wake up frames: Magic Packet and IP Frame. TT does not want anything to interfere with the process of trading and therefore we recommend that you disable this setting. Network adapters with appropriate NDIS 5 (and later) miniport drivers can increase the system performance by supporting hardware offload of Transmission Control Protocol/Internet Protocol (TCP/IP) CPU intensive tasks. However, we have found that enabling this setting does in fact have the potential to corrupt data at the packet level and therefore we recommend that you disable this setting. Configures the number of Rx Host Coalescing Ticks in microseconds. This determines the upper-bound threshold of the time interval that the device will generate an interrupt if one or more frames are received. When an interrupt is generated, the flow of data to and/or from the NIC is temporarily disrupted. TT does not want anything to interfere with the process of trading and therefore we recommend that you disable this setting. Configures the number of Tx Host Coalescing Ticks in microseconds. This determines the upper-bound threshold of the time interval that the device will generate an interrupt if one or more frames are sent. When an interrupt is generated, the flow of data to and/or from the NIC is temporarily disrupted. TT does not want anything to interfere with the process of trading and therefore we recommend that you disable this setting.
NIC Setting Rx Max Coalesced Frames = Disable Tx Max Coalesced Frames = Disable Jumbo Packet = Disable Reduce Speed On Power Down = Disable Save Power Now Enabled = Disable Description Configures the number of Rx Maximum Coalesced Frames parameters. This determines the upper-bound threshold of the maximum number of Rx buffer descriptors that a device processes before it will generate an interrupt. When an interrupt is generated, the flow of data to and/or from the NIC is temporarily disrupted. TT does not want anything to interfere with the process of trading and therefore we recommend that you disable this setting. Configures the number of Tx Maximum Coalesced Frames parameters. This determines the upper-bound threshold of the maximum number of Tx buffer descriptors that a device processes before it will generate an interrupt. When an interrupt is generated, the flow of data to and/or from the NIC is temporarily disrupted. TT does not want anything to interfere with the process of trading and therefore we recommend that you disable this setting. In computer networking, jumbo packets are Ethernet packets with more than 1500 bytes of payload (MTU). Conventionally, jumbo packets can carry up to 9000 bytes of payload, but variations exist and some care must be taken when using the term. Many, but not all, Gigabit Ethernet switches and Gigabit Ethernet network interface cards support jumbo packets, but all Fast Ethernet switches and Fast Ethernet network interface cards support only standard-sized frames. However, we recommend disabling Jumbo Packets because we do not send packets with more than 1500 bytes of payload and therefore the larger throughput is not necessary. The Reduce Speed On Power Down and Save Power Now Enabled settings are triggered by inactivity on a PC and actually instruct the NIC card to reduce the connection speed to which it is set. This increases the chance that problems such as latency could occur, so TT recommends that you disable these settings.
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Hardware and Software Requirements
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Hardware and Software Requirements
Page 5 and 6: Server or Product Synthetic SE Reco
Page 7 and 8: Components Network Card Minimum Req
Page 9 and 10: Hardware and Operating System — W
Page 11 and 12: • Wake On = Disable • Wake up M
Page 13 and 14: Power Save Settings To avoid unexpe
Page 15 and 16: Hardware and Operating System — W
Page 17 and 18: NIC Teaming Limited testing perform
Page 19 and 20: Windows Services In Windows Service
Page 21 and 22: TT Gateways — Market Data Traffic
Page 23 and 24: LIFFE Connect Adhere to the followi
Page 25 and 26: TT WAN Router Registry • Add the
Page 27 and 28: X_TRADER Remote Hosts Keep the foll
Page 29 and 30: • Nagling: Enable Nagling by sett
Page 31 and 32: Additional Best Practices for Serve
Page 33 and 34: Client-Class Machine Optimizations
Page 35 and 36: Registry Set “No Arp’ing” by
Page 37 and 38: Windows Performance Settings Ensure
Page 39 and 40: Network Connection Properties TT re
Page 41 and 42: Power Save Settings To avoid unexpe
Page 43 and 44: Windows Performance Settings • En
Page 45 and 46: TT Client-Class Software General Do
Page 47 and 48: Guardian When an Administrator upda
Page 49 and 50: Additional Best Practices for Clien
Page 51 and 52: Appendix: Setting Descriptions NIC
Page 53 and 54: NIC Setting Description Microsoft Q
Page 55: NIC Setting Transmit Descriptors =
Page 59 and 60: Table 1: Registry Setting TT Machin
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